The term "man's best friend" stems from the domestication of dogs in early history. Studies have shown that these four-legged creatures were domesticated more than 33,000 years ago. Starting with the wolf, today there are more than 400 different types of breeds. Dogs were first used as helpers. People used them for work such as hunting and herding. Over time, people began to use them more for help and protection. The US Army was the first to initiate the use of K9 units in 1835. Europe, Belgium, Germany and Hungary realized the potential of these dogs and took up the idea in the late 1990s. 1800. By 1911, Germany alone had more than 400 police stations equipped with K9 units. There are now more than 22,000 dogs used by law enforcement. Bloodhounds, known for his idea; smell, was the first breed used by police in Europe. It was 1888 when Jack the Ripper was on the loose. The famous German Shepherd got its start in Germany during the Holocaust by the Nazis for prisoner control. At that time, they were used less for protection than for attacks. With proper training, dogs are now considered legitimate police officers. Each state offers its own K9 training academy. On average, all training academies start the training process when the dog is still considered a puppy. This lasts approximately 12 to 15 months. It is possible, but very difficult, to train at a younger age due to the puppy's lack of concentration and maturity. The first step in the training process is basic obedience. This is when the puppy learns basic commands, such as sit, stay, come, and down. Depending on the academy, the training portion lasts approximately 6-8 weeks. Some dogs are trained in Europe and then brought to the University...... middle of paper ...... dog police discovered a shipment of marijuana in heat-sealed Mylar bags, inside plastic crates , sealed with foam sealant, inside a storage garage. This shows how in-depth and vigorous these parts of the training are. Once the dog has found the hiding place, there are two types of alerts it can give to inform the owner. The first type is an aggressive alert. This is where the dog will bark or scratch at the place where the medications are. The second type of alert is a passive alert. This is where the dog would sit when he found the location. In some cases, an aggressive alert would be dangerous, so they teach the dog a gentler approach. Dogs learn to give both aggressive and passive alerts when the time is appropriate. Once all training is complete, the dog is finally allowed to join its handler in the patrol car..